基于滑模观测器的孤岛风柴混合电力系统SVC滑模补偿控制器设计

发布时间：2018-03-14 16:53

本文选题：孤岛风?柴混合系统　切入点：静止无功补偿器(SVC)　出处：《电网技术》2017年01期 　论文类型：期刊论文

【摘要】：针对独立风柴混合电力系统中风能和无功负荷变化所引起的电压波动问题,提出了利用静止无功补偿器(static var compensator,SVC)稳定电压的控制策略。实际SVC存在模型参数不确定及状态变量不完全可测的问题,故利用滑模控制算法,设计基于鲁棒观测器的SVC附加滑模电压控制器。为此,首先建立孤岛情况下包含SVC的风柴混合电力系统的数学模型;然后选择适当的比例切换面和趋近律到达条件,并基于观测器估计值来构造SVC鲁棒电压控制器;最后基于Matlab仿真平台搭建算例模型,对所设计SVC滑模电压控制器的鲁棒性进行验证。仿真结果表明,所设计的SVC滑模电压控制器与传统的SVC控制策略相比,可有效抑制电压波动。
[Abstract]:Aiming at the voltage fluctuation caused by the variation of stroke energy and reactive load in independent wind and firewood hybrid power system, This paper presents a control strategy of static var compensator (SVC) stable voltage using static Var compensator. The actual SVC has the problems of uncertain model parameters and incomplete measurement of state variables, so the sliding mode control algorithm is used. A SVC additional sliding mode voltage controller based on robust observer is designed. Firstly, a mathematical model of wind-firewood hybrid power system with SVC on isolated islands is established, and then appropriate proportional switching surface and reaching condition of approach law are selected. The robust voltage controller of SVC is constructed based on the observer estimation value. Finally, an example model is built based on the Matlab simulation platform to verify the robustness of the designed SVC sliding mode voltage controller. The simulation results show that, Compared with the traditional SVC control strategy, the designed SVC sliding mode voltage controller can effectively suppress the voltage fluctuation.
【作者单位】：上海电力学院电气工程学院;天津大学电气与自动化工程学院;
【基金】：国家自然科学基金资助项目(61403246) 中国博士后科学基金资助项目(2014M560187)~~
【分类号】：TM761.12

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